Machine for laying pipes in trenches



Sept. 20, 1932. J. F. ROBE 1,877,975

MACHINE FOR LAYING PIPES 'IN TRENCl-{ESy Filed sept. 8. 195o 5 sheets-sheet 1 Sept. 20, 1932. i. F. ROBB MACHINE FOR LAYING PIPES IN TRENCHES Filed Sept 8. 1930 5 Sheets-Sheet 2 Jaim E sept. 2o, 1932.

.1. F. ROBB MACHINE FUR- LAYING PIPES IN TRENCHES 5 Sheets-'Sheet 3 I Filed Sept. 8, 1950 :jme/nuls@ Jah n?! 305,6.

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il llamvl f1 Sept 20, 1932- J. F; ROBE MAQHINE FOR LAYING PIPES IN TRENCHES Filed Sept. 8, 1930 5 Sheets-Sheet 4 sept. 2o, 1932. J. F. ROBE 1,877,975

MACHINE FOR LAYING PIPES IN TRENCHES l l Filed sept. 8, 1930 5 sheets-sheet 5 Patented Sept. '20, 1932 Jenn F...nof13B'oF CLEVELAND HEIGHTS, omo i i MACHINE FonLAYINe rIrns 1N 'rRENcH-ns Application ledfeptember 8, 1930. Serial'No. 480,544. i

In' the laying ofthe pipe lines'of considerablelengths, .asforinstance5 in the construction ofvpipe lines designed to transport natural Agas fromthe fields to dispensing 5 points *from'which it is "dispensed toy consinners, onwhere petroleumv products V are vled from theproducer to the renner, itis lcustomary'to lay the sections ofpipe end to'end alongside of a ditch Ortrench'dug tore- IO ceivefthelinefthen secureJ the ends of 'the lrespectiveV jsectionsl together 'either "by weldi-ngcor by fjoining' in any otherV well; known mannen and: thenv letting lthe completed lline u down into; thetrench; "Usually before intro'- il ducingthe lineinto itsv receiving trench, it

iscustomary to lay; the sections of pipe, usua-ll'y before; joining, over-1 the' trench, the -sec'- tions being supported on heavybarsacross the trench,l so f thatA ,afterthe ends of the re- 20 spective sections 'have' been oined, the Aresulting line 'canl Abe :"laid' 'intoi the* trench by the removal'- 4of the 1 bars l'roln beneath it;- although in some yinstances' thefbars arci-laid alongside the trench 'and-the ends of 'the pipe sections` connected at? the sidefof thetren'ch and then deposited therein. l

The present invention relates to a'jmachine which will readily "remove the sup-porting bars Vfrom beneath V"the 'pipe line, and deposit the pipeline vinto lits prepaied treneh; 'and the invention providesa machine which will progressively 'travel' along the trench; while straddling' the same,` iand which iis provided and alsomeans'whereby "the supporting means `or'barsmay bereadily removed from under the pipe and thelpipe :laid intothe 'trench rwithout f dangery I of -'breaking the joints in the'line.

In-additiontoz the foregonig avfspeci'al purpose Yof my invention has 'been to design my machine to *provide 'rollingengaging means intermediate' the` 'pip'e :and the supporting means Itherefor vcarriedA byfthe -machine, su-ch means aiordin-gf-theft'wofiold yfunctiony offene-bling a continuous 'forward movement ofth'e tmachinei whilefholding the `of Figure 3.

porting member which 'forms an important.

with appropriate lifting yand supporting means'adapted totravel alongthe pipeline, v ing in side elevation two pieces offpipe oined together by the'iusua'l bolts.

yoverthe trench.

lateral shovingmeans for shoving" the pipe Y 'into a position inline with and above the trench when-the operation is'one wherein the pipe is preliminarily disposedat-one side of the trench preparatory lto being ydeposi-tedf therein. r

Still another important' object' of this invention has been to design thev pipesupport.- ing means on the machinejsojthat 'it may travel continuously in engagementwith the 60 pipe and readily pass over the pipejoints which in certain types of pipes 'form protuberant annu-lithat must be dealt with-by a machine such as herein proposed.

y The machine oi this invention ischaracter- 55 ized by its Asimplicity in'construction, its `wide yapplicability for pipe layingV operations and .Figure 2'is a topplan view of the machine.

-FigureB is a side elevation -of=a somewhat T5 mod-inedV form of' the machine;

Figure tis atop plan view ofthe-machine F igure' is a View of a pipe 'guide or suppart of'this machine. v

Figure 6shows a'detailQof constructionof the guide 'or pipe-supporting niemberytalen about on the' linefG--G oll3`1-gure57 butshow- Y fFi'gure'7 is a fside'elevationfof'the'member reif Figure 5.

FigureS is a top plan view showing the machine laying the pipe line into a'trenchywhen the pipeline has' been' formed, and issup- Iported'along the side of the trench; and,

Figure 9 is a similar view showfing'the machine laying a pipe line int-oa trench from fthe more usual position; wherein the-pipe linev 95' -has been? formed yand is supported directly u It will .b eseen from'thedrawings that'lihe machine is a 'motordrivenfdeviceg'the numeral l0 representing, the radiator'fandlhood for "100 39, and is operated by the gears 40 and 4:1.,

the engine, the engine being supplied by fuel from the tank 11, the machine being mounted upon traction devices 12 for propulsion along the trench. The machine is also provided with a seat- 13 for the operator. These features are of standard construction and form `no part ofthe invention. Power is transmitted-:to'the Vtraction devices through the crank shaft 14, the gear 15 and through the chain 16 in the usual fashion, the chain 16 engaging driving sprockets. on the drivingV member 17.

Itwill be understood that'the frame of the machine is formed in much the usual fashion,

and comprises side members 18, one on each `side, which are bridged bythe bridge 19, this sot-,hat an end ofthe pipe may readily be introduced into: the pipe guide and-shoving member later. to r beV described. i

Power is transmitted to the'drum 23 by meansjof a shaft provided witha gear 26 `whichtmeshes with the gear 15, and takes power from the gear 15, the shaft 25rotating as long as the shaft 14 and gear 15 are being drivenl by the motor.` Taking power from the lshaft 25 by virtue of the clutch device 266, is a shaft 27,. provided with a gear 28 which meshes with agear 29 to drivea shaft 370,*whichy is provided with a gear 31which meshes with a gear 31.- A gear32 meshes with a gear 33 with which the'drum- 23 is provided,motion thusbeingZ imparted to the drum '23. It will be seen that the gear 33 .isr considerably larger than the gear 32, so that lthere is appropriate reduction in speed of rotation of the drum 23. The shaft, 27

'may be brought into and, out of operative 'engagement with the shaft 25 by means of the clutch26b, a lever 34 connected with@ rod 35 to alever 36 bringing the clutch 265. into engagement withthe shaft 25 upon'operationV lofthe lever v36,0perating the lever 36 causing corresponding operation of the lever 34,

tomake and break the-contact between the `clutch elements 260 and 250.

Also mounted upon the member 19 'is a worm 37, which worm is'mounted in brackets 38 and 39, and the shaft of which is provided with gears 40 and 41 whichare adapted to engage and meshwith agear 42 on the end of a shaft 43,l theother end of the shaftv43 i The worm37 turns i'nthefbrackets 38 and which are carried by a Vsleeve 47 which is slidably keyed to the shaft of theWorm 37. The lever 46 is secured to the sleeve'47,as Vindicated at 48, and is fulcrumed at 49 to a standard 50, which is also secured on the' member 19. The lever 46 is v`operated by a lever 51 which is connected by a rod 52 to the lever 46, the lever 46 'thereby servingas fa bell crank to slide thek sleeve 47 to engage the gears 40"'a'nd '41 selectively, with the gear 42. It will be observedthat the gears 40 and 41 are i so mounted as to give Vopposite rotation to the worm.37, thewoim 37 engaging a worm gear 53 mounted on a shaft 54. This shaft 54 -is threaded, as indicatedat 55 and 56, threads 55 and 56 r unning.i n oppositedirections,

.there being a guide member,1indicated atj57,

hereinafter. g A The 4'guide lmember 57 is Vformed with two which Vwill, be Almere specifically,"v described jaws 58 and 59,'the jaws terminating in menibers 58a and 59a through which the threaded Shaft 54 passes... The jaws are pivoted' together at 6th2 l .To prevent Vbreakage lof Vthe arms 59a duringoperationof the guide'meniber 57, these arms are provided with bearings, such as vball bearings, indicated at 60aA andil, Fgure 5, Trwhich facilitates `opening andclosing of the jaws 5 8 and 59 upon their operation, I t` will be seen `that the :jaws 58 and 59 when closed, define a foursidedopening, there being provided in thesidesof Veach 0pening, a roller indicated at 61a, 63 and 64, the `face/ ofthe side of the clampafdjacent each roller bein beveled, as indicated gat 6 5, iny Figure 6, to acilitate the p z issj agey lof pipe 24 through the jaws 58 and 5 9 of .theclamp 57 g After the lever51'isoperatedto mesh the gear 40 with the gear 42, the worm 37 will actuate the gear 53 to operate the shaft 54so as to, for:inst ance,open the jaws 58' and 59; c .Oper-ationof thelever 51 in the opposite direction to ,mesh the gears 41 and 42 will theends of` the-.rods resting onthe ground .l yadjacentthe sides ofthe trench ;VV and it is also stated that it isfnecessarvtoremove these rods oribars before thepipe line can be laid in .the trench. Themachineof theJpresent invention is provided with means for removing these bars so VVthat the pipe line may be laid.

These means are indicated Vbyfjaws, 66, and 67 terminatingin arms-,66a and 67a respectively, fulcrumed together at .68,- and supportedbybracket 69 secured tot-he side frame of the machine.

f Through. the bracket *69;1rui1sV a shaft l r which, carries 'a` pulley 71 anda lever 72, the lever :72 being eitherapart of the arm 66a, or. in operating engagement therewith. Y A

maman i theafree .gends of@ ther respective cnanks, @so

ntajbfithe secured to a leve-r 84, the cable passinghyer-'fmned;ati`,82,aonezarmrof Whichzfseonneeted e that the arm ofthe `cranliSl to which-tlm t ffeable- S3-:is secured, Willyrbedepressedg ftogpllf afposinoaitheggar g A150; similarly connected as; abovef deserlbed, Y

irespectively withL Vgears 106 and'l 107 "which operate the l"clampingmembers 79 'andfj80 .'vrespectively:r The shaft ,100 Vhas securedv to itla-z gear 93,. which Vis relatively large,.and a f .tiallysm'aller than the' gear 93, and the shaft l9=1 carries fthe gears-92 and 94.which are lada-pt'ed'during the operation of the machine second 1gear'108' which is? relatively substantively, f gear 92 being substantiallyfsm'aller t -thangear 94;:- It will be seen lthat theV gear tioned {intermediatethelarge gear 93 and the v Foroperating the guide member 80, Aaref {"intermediate the smallgear 109 andthe worm l "108 is positioned the large gear '110 which is adapted to 'engage andme'sh with the small gear 951i" ','Asthe machine progresses along the trench the joint 7 8of thefpipe line will'abut against the free arm of the c'rank81, 4depressing the l' arm to: which is securedthe cable 88. This operation pulls the cablel and the'end-of the lever 84 in thel direction shown b`y the arrow, causing the other end ofthe lever 84 to `pull over" the `fork 97l against the tension jo the.

" scope ofv 'thisinvention such I modiications spring 99 until theI large gear 93V meshes'fwith the small"'gear' 92.5 This then rotatesthe worin 102 to operate` the gear 106 to vopen the guide member 7 9lsufi'ciently wideJ to`- permit tvthe passage therethrough of the joint78.:v

` Simultaneously 'with this action, the Vsmall gear is brought into engagement with the f large' gear 96y which( because of the relative sizes and dispositions iof these gears, imparts Va relatively more'rapid motion to the', gear ki109', than iis the Vspeed of 'rotation loit the gear 96 so that as theguide member 7 9 opens, the

" guide member 80 will be 'closed'so that there isno possibility of the pipe ,between both members.

wheat-he joint ,78 of the ripe lie@ has fpssealihroughih@ guide member 179, a e1- gages-thebe'll crank 89, whichdepresses the cable'carrying armthereof to '.pull the lever "member 80 while ythe V'guide member 79Jis being closed. .This action automatically takes place with each'passage ofv a joint 78, Avonejof theguidev members being always closed l"asthe'other opens so that there is continuous :fof the guidel members.

InFigures 8 and'9 there is shown the ma- "gehinepassin'g over trenches, in1Figure'8'the *pipe* line 24 being laidl adjacent the 'trench 4straddling the same', seefFigure-8,thepipe line is Vshoved;orfpushed'finwardly' overV the? ltrench as clearly shown, wliereas'int :Figure 9 it vis simply `laid-'- directly fdoyvn-lzy the mai chineffas the bars'f77 areremoved-.f-The Y weight' of the machine is suiicient to give V vnecessaryv lateral pressureto the lpipe Vgmini-975 iing and. supporting -jaws `asftheyI perform 93"'is positioned adj acentthe end of the shaft,"

lineslipping out 'jaws movable to engage .and disenggnge the. pipe, andr mechanism to *operatefthejawsf directly over thetrencliv As. the machi. e passes V@along"ithe-trench their functions of pushing 'the pipe into alineV :ment with thetrench" according tothe operation` illustrated in ig'ure 8:l vLikewise the' regular Ifforward' movement-off the lmachine-"` lowers the J pipe gradually into place at bottom ofthetrench. vAll required is to'keep the machine" in orwardmotion'*andyif .de-l sired, operate thermembers 66;(37 fbr're-V moving the' cross-pieces" or bars 77 on wl'1i ch"?5 the pipe has been resting'. 1" The? parts66'-'67 'may under some conditions be omitted 'enlIt willbeunderstood thatv the.' above illus? trated` vforms and-"descriptionthereof'faref'il-lo Y.

lnstrated onlyas examples of "machines c on-V r structed in accordancefwith this invention,

and that many modiications in-the details. of Y the construction thereof V`maybe made-without departing from the'i'nventive concepten It will be accordingly understood that itv is intendedan'd desired to embrace within the and changes laslmay be necessary to vadapt it I claim s -new and-desireto lsecureby Iie'tters Patent of' the'United St'atesSi-4 41. A pipe 'laying'l machine y comprising va traction base "for `traveling alongfthef trench?-1105 in `whi'chfa v pipefi's ;,to beflaid, and guiding means on thel saidlbase to -continuouslyftravel along and engage the'pipe foriloweringfit into1 the trench7 said guiding means including jaws movable @Langage andgdisengage tha-'T110 pipe, mechanism to operate thefjaws. f

1` 2.' AV pipe laying machine',v comprising'- a traction base forl traveling along vthetr'ench in which a pipe is to be'laid, and guidiiigimeans on the said base to lcontinuouslytravel :along'lh and engagethepipefor lowering it; into'the 8 4 inthe opposite direction, to open Vthe guldef trench, said 'guiding means 'jincldingfjaws movable Sto Y'en'gag'fe and .disengage the; pipe,

mechanism to operatefthe jaws, and roller along and engage -the pipe for lwering it into the trench, said guiding meansincluding in which" apipe'is to 'be"'laid,{ and guidin-gl125 Y means on the said base'toV` continuously travel "4.1A'pipe layingV machine comprising Va traction Abase -`for ltraveling along :the 'trench Ainvvhieha pipe is to belaid,fand guiding A'means oi'rtlie said vbase ft'o continuously travel alon-gand engage the pipelfor-lovvering it 'intolthe trench,- said guiding means `including l pants to spreadand vmno-ve togetheritorelease -andembrace"fthe Ipip'e,-and finstrumentalitie's I ,j

COmbination with driving* mechanism, of .a

toaetuatethelast namedparts for saidV move"- f-meIlts.' 'i *5. *Afpipe' 'laying machine comprising a traction base for traveling'aloiig the trench inlvvhich a Vpipe yis to be laid, and guiding,

meanson thesaid bas-e'to continuously travel Y 'alongandfen'gage-the pipe for-lowering it into Ethe trench, said-.guiding meansllineluding 'parts to spread and move together tor'elease tand f embrace the pipe, and instrumentalities to actuate vthe last named-parts for saidv j Atraction sbase ior travelingalong the ftrench Alio in Which a pipe iste-be laid, and guiding 'means 'onthefsaid baseto continuously travel along ,and engage the pipe for? lovveringit 'into the trench', said `vguiding means including-spacedpairs'ofjavvs toreceive and engage f'tliepipe at oppositel sides thereof, and me ans t'o'ojgiiera't'e each/pair offj avvsvto openandclose asthe other pair is closed and openedpforen- Ythe avvs jto readily, `pass oints in .the e. fx I f'ri.. i A i.' Apipellayinglmachine, comprising the fconibinati'on with driving means-for the ma- "chine,fofhoisting means carried by'tliermachine forlifting a pipe line from its support- 'i'nlg beams, and ,mechanismA carried jby "the machineior removing the"loea'ins as the-pipe lineisliftedf f 1Q 758. A pipe-.layingmachirm comprising the combination 4:vvith Vc lfrivi'ng means'for ythe maichine," ofhoisting means 4"carried'by the ma chine `l`for lifting a pipe lin'efro'm its supporting'ibeams, .mechanismV carried by the machine l'for gripping-andremoving the'beams as the j combination With-driving mechanism,of 'a pair of guiding devices carried by the mei-Q12 *its supporting beams, and mechanism car-V Eried'bythemaehinefior gripping and' removing vtlm-beams as the pipe VlineA is'liiited, the i mechanism comprising a pairoffinteraeting Ajaw Ine'imbers pivotally mountedf-upon" the `m-achine`forgripping vand removing' the beams, and means .under ready control of the operatorfor actuating the -beam`removing fme'chanismp 10; A pipe-laying machine-comprising the combination with drivingimeans forthema- Chine, l`of Y hoisting in strumentalities .Carried by the machine for liitingv a pipe .line from its .supporting beams, Jand L mechanism, actuated bytliedriving means for supportingv the ,lifted lineand 'ioilayingit infits trench,`

guiding means comprising Cooperating members,adapted to engage the` pipeline, and

'means operated'b'y the driving mechanismto actuatethe members. "l

12. A pipe-laying machine, comprisingthe '-Vcombination with drivingmeclianism, of -a guiding' device carried. vby-the machine Vfor guiding 'alpipe line'intoit's trench, the guiding means "coi'nprising Vcooperating 'javv members nor' engaging andzguiding the pipeilin'elrollers Vcarried-in each vvjaw `to`ftacilitate 1 passage Vv'of vgi'iiclirigia pipeline 4into its trench, :thesa'id thepip'elinef throiiglitheguide as .fthefmachine travels along the line, andfmeans operated-by the driving meclianisinftoactua-tethe avvs to open and close them.

j 13. A pipe-laying-machine, comprisingtheV combination rWith driving l-m'echani`sm, oiga "guiding device c'arried fby=the machine "for -guidinga pipe line'intoitstreneligtlie-guid- K ing means comprising cooperatingjayv memhere 'adapted 'to receive betweenfl-them predetermined'sizes ofpipe,meansineach for engaging the pipe -line to facilitate passage 'thereof ,.tliroug'li the guide' as the machine travelsalong the line,'land instrumentalities operated by thegdriving mechanism to engage and disengaget-hejavvs froin'the-pipelline.

14:. 1A pipe-'laying machine, comprising'the combination vvith drivi mechanism, of' la 'pair' of guiding devices carried `bythemachine,`eaeh oi the devices beingactuated lby thefdriving mech-anismfand being adapted Ato close around -a pipe linefto f vguidefit `into -a Atrench thereforfas the machine travels along -theftrench-, and means for closingione' offthe Y devices as-the other opens to assure continuous support for the pipe line. Apipe-laying machine, comprising-:the

the pipeline for guidancethereof, andmeans for elosingone of the devices asithe other opens Vtoassure continuous support for -the Apipe line. v ,A 16. ALpipe-laying machine,..compr1sing the combination vvitli drivingmechanismfo'f a pairfof guild'ing-'devices carried by fthe 'machine for guiding a jointed pipe line, eachV V*continuous support for the pipe line.

of the devices being adapted to close around the pipe line, means adjacent each device and operated by contact with the pipe line joints to bring. the devices selectively into contact withA power transmitted from the driving -mechanism to open first one and then the other of the devices, and means for closing one of the devices as the other opens to assure 17. A pipe-laying machine, comprising the combination with driving mechanism, of a pair of guiding devices carried by Athe ina- "chine for guiding a jointed pipe line into a trench therefor, each of the devicesv compi'ising a pair of jaws adapted to close aroun d the pipe line, means adjacent each device and operated by contact with thepipe line joints to bring the devices selective-ly into contact with power transmitted from the driving mechanism to open first one and then the other of the devices, and a gear system for transmitting power from the driving Lmechanism to the devices, the gear system also serving to close one ofthe devices Aas,

Vthe other opens to assure continuous support and guides for the pipe line.

18. A pipe-laying machine, comprising j the combination with driving mechanism, of lifting and guiding means for laying a pipe line into a trench thereof, and instrumentalities carried by the machine, for progressively removing supporting bars which carry the pipe line.

. vprogressively gripping and. removing suping` a pipe -line into a trench therefor, and

porting bars Vwhich carry the pipe line.

20.`A pipe-laying machine, comprising the combination with driving mechanism,

- of lifting and guiding means operated by the driving mechanism for lifting and guida gripping means for progressively gripping and removing to one side bars carrying the pipe line.

21. Alpipe Vlaying machine comprisinga traction base for traveling along the trench in which a pipe is to be laid, and guiding means on the said base to continuously travel along and engage the pipe for lowering it into the trench, said guiding means includingspaced pairs of jaws to receive and engage the pipe at opposite sides thereof, means to operate eaclipair of jaws to open and close as the other pair is closed and opened, for enabling the jaws to readily pass .joints in the pipe, and instrumentalities to actuate the last means, vthe operation of which'is caused by coaction with joints in the pipe.

4 eration.

22. A pipe laying machine vcomprising a traction vbase for traveling along the trench in which a pipe is to be laid, and a'pushing device adapted to push-a pipe from a lateral and parallel position relatively to the trench 4 tudinal alignment therewith, the said pushinto a position above the trench and in longiing device beingcarried by the base and ar-l ranged for continuous running engagement with the pipe being laid as the machine pIZOf gresses along the trench, said'pushing device comprising a frame having moving contact parts upon it upon which the pipe is carried and which turn freely by `contact, against the moves along the pipe being handled,v to thus avoid friction between the frame and pipe.V 23. A pipe laying machine comprising a traction base for traveling along theL trench i in which a pipe line is to be laid, and lpipe line lifting and Vsupporting means on the said base, including instrumentalities to continuously travel along the pipe line comprising moving parts to directly vcontact Vthe under side of the pipe and support the same to avoid friction between the supportinz'g;V

means and the pipe as the base travels along the pipe, the said supporting means engaging and lifting the pipe line from the ground for lowering it into the trench. f

24. A pipe line handling machine comprising a traction base for traveling longitudinally of a trench along whichy a preformed pipe line is disposed readykto .be laid therein, and-pipe lines supporting means on the said base including a frame vhaving moving parts to engage the underside O f a` pipe line and to continuously travel along the pipe line as the latter is positioned relatively to the trench, the saidmeans engagj.

ing the pipe line to Vmove the same relatively to the trench in the pipe line handling ,op-

25. In a line laying machineofrftlie cui c" embracing the pipe line and.mmmble` all-Ong the pipe, the said member comprising ajplu- .rality of rolling surfaces transverse to the line of pipe being handled and disposed in divergent relation to provideV a space in 3.,.:

which the pipe is received and supported. l

26. In a pipe line laying machinefofthe class described, a pipe supportingfmeinber embracing the pipe line, the said member comprising` a pluralityof 'jaw members in er,

spaced relation and roller means on the said 27. In a pipe line handling apparatus,a pipe supporting element comprising Va Vpair of movable pipe supporting jaws mounted for movement along the pipe,y and roller meansy carried by the jaws and disposed transversely of the pipe to provide free longitudinal movement of the supporting elerf.;-

Ajaw members for permitting freelongitudi- Y vnal movement thereof along the pipe line.

under side ofthe pipe as the travelingfbase 3,0

class described, a pipe supporting.member..110` Y ment with respect to the pipe to besupport-k Y ed and means for holding said jaws in closed "ple device adapted to engage and support a. y

position. p

28. In a pipe handling apparatus ofthe class described, a portable support, means for moving theV support, and apipe support'- ing member carried Vby the supportincluding a pair of complemental pivoted jaw members arranged to engage a'fpipe line to be handled, each of said jaw members being' provided at its inner face with pipe supporting rollers arranged to rotate in a direction coinciding Withvthe direction of movement of the support for producing free longitudinal travel of the support along the pipe.

29. In a pipe handling apparatus, a grappipe While moving therealong, the said device being provided with anti-friction means disposed transversely of f the direction of movement of the device. Y a o In testimony WhereofI aiiX my signature.

' JOI-IN F. ROBB. 

